1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b54cb6b3a6d45d3c758a611ad2ad81037b3daf81ed1db3bf0f1da0199af0d4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83368e60-f6ba-4310-863f-9f2f921e66ca.json and https://artists.proofprofile.net/proofs/artist/83368e60-f6ba-4310-863f-9f2f921e66ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767cf63dfd83d34079718c3aac4e9c7dccc534705a516a6550741b7be869b0fa. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA609000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e07d3d2e0ffc60a3b738173200e463314bd58ec74bf441e052f30c279c27cd6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA609000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27349103f1cbaec66ed03447425b3bca2d3d0316b83188954b269698c4995345. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769603506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3614e8f33a27999134d036cfaf0f775803dc4f131bfd999ac26bf6c8e699dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769909909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135fe84b26bb73d7bce86e0a83e70b27e4749e6e1bf2bc1f1a3d3849eec9236f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a975deabbeddfbb25b2c6e12e709bf6d4a12cc861124d30681f82cd396c859. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769300110.
Mit 50 ist das Leben noch lang nicht vorbei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a960082685b97441a4c64f6f778ac8ff9d7b0b754c3ba5ebf74283fa96f70. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA760300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e82377d16c246eabe769f2049a096b7ffb38861b07931c5e732a5984975eaf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:22:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA761000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cdd06f563bb8bdba357a33239cbbe65597b4f6467f4ffaaeaa5bff712e90ab. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA431200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42300d85c0c880280861d3d83dcacda2f4aef019a63466071004717da8877b4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA431200480.
In meinem Himmel steht ein Schloss für dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7b0c0dfc207931e8b66175a4f98e3528ef4957e87ed0804f264e59a99a9fa6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA431200483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c93f90a3c654405d6dd082c588cb17b1553aa71483303702679ddd73e2aa0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVS23201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b6d6bcaa633a81bda1fb8be7827024441a2c73adfe28d0ab91fa434a7696ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVS23201037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c93f90a3c654405d6dd082c588cb17b1553aa71483303702679ddd73e2aa0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVS23201030.
Das Schlager-Studio präsentiert: Gaby Baginsky